示例：验证和执行已保存查询
发布日期： 2017年1月
适用于： Dynamics 365 (online),Dynamics 365 (on-premises),Dynamics CRM 2016,Dynamics CRM Online
此示例代码适用于 Microsoft Dynamics 365（在线或本地）。下载 Microsoft Dynamics CRM SDK 包。 它可能位于下载包的以下位置：
SampleCode\CS\GeneralProgramming\Queries\UserQueryAndSavedQuery.cs
要求
有关运行此 SDK 中提供的示例代码的要求的详细信息，请参阅使用示例和帮助程序代码。
演示
此示例演示如何使用 IOrganizationService.ValidateSavedQueryRequest 消息验证 FetchXML 查询，然后使用 IOrganizationService.ExecuteByIdSavedQueryRequest 消息执行查询。
示例
// Connect to the Organization service.
// The using statement assures that the service proxy will be properly disposed.
using (_serviceProxy = new OrganizationServiceProxy(serverConfig.OrganizationUri, serverConfig.HomeRealmUri,serverConfig.Credentials, serverConfig.DeviceCredentials))
{
// This statement is required to enable early-bound type support.
_serviceProxy.EnableProxyTypes();
CreateRequiredRecords();
#region Validate saved query
// Create the request
ValidateSavedQueryRequest validateRequest = new ValidateSavedQueryRequest()
{
FetchXml = _savedQuery.FetchXml,
QueryType = _savedQuery.QueryType.Value
};
// Send the request
Console.WriteLine(" Validating Saved Query");
try
{
// executing the request will throw an exception if the fetch xml is invalid
var validateResponse = (ValidateSavedQueryResponse)_serviceProxy.Execute(validateRequest);
Console.WriteLine(" Saved Query validated successfully");
}
catch (Exception)
{
Console.WriteLine(" Invalid Saved Query");
throw;
}
#endregion
#region Execute saved query
// Create the request
ExecuteByIdSavedQueryRequest executeSavedQueryRequest = new ExecuteByIdSavedQueryRequest()
{
EntityId = _savedQuery.Id
};
// Execute the request
Console.WriteLine(" Executing Saved Query");
ExecuteByIdSavedQueryResponse executeSavedQueryResponse =
(ExecuteByIdSavedQueryResponse)_serviceProxy.Execute(executeSavedQueryRequest);
// Check results
if (String.IsNullOrEmpty(executeSavedQueryResponse.String))
throw new Exception("Saved Query did not return any results");
PrintResults(executeSavedQueryResponse.String);
#endregion
#region Execute user query
// Create the request
ExecuteByIdUserQueryRequest executeUserQuery = new ExecuteByIdUserQueryRequest()
{
EntityId = _userQuery.ToEntityReference()
};
// Send the request
Console.WriteLine(" Executing User Query");
ExecuteByIdUserQueryResponse executeUserQueryResponse =
(ExecuteByIdUserQueryResponse)_serviceProxy.Execute(executeUserQuery);
if (String.IsNullOrEmpty(executeUserQueryResponse.String))
throw new Exception("User Query did not return any results");
// validate results
PrintResults(executeUserQueryResponse.String);
#endregion
DeleteRequiredRecords(promptforDelete);
}
完整示例– C#
using System;
using System.Collections.Generic;
using System.IO;
using System.ServiceModel;
using System.Text;
using System.Xml;
// These namespaces are found in the Microsoft.Xrm.Sdk.dll assembly
// located in the SDK\bin folder of the SDK download.
using Microsoft.Xrm.Sdk.Client;
// This namespace is found in Microsoft.Crm.Sdk.Proxy.dll assembly
// found in the SDK\bin folder.
using Microsoft.Crm.Sdk.Messages;
namespace Microsoft.Crm.Sdk.Samples
{
/// <summary>
/// Demonstrates how to execute saved and user queries by id, and how to validate
/// a saved query.
/// </summary>
/// <param name="serverConfig">Contains server connection information.</param>
/// <param name="promptforDelete">When True, the user will be prompted to delete all
/// created entities.</param>
public class UserQueryAndSavedQuery
{
#region Class Level Members
private OrganizationServiceProxy _serviceProxy;
private List<Account> _accounts = new List<Account>();
private SavedQuery _savedQuery;
private UserQuery _userQuery;
#endregion Class Level Members
#region How To Sample Code
/// <summary>
/// This method first creates a series of Accounts to query over, a user query
/// that retrieves the names of all Accounts with a name of 'Coho Winery' and
/// a system query that retrieves all Account names. Then it validates the system
/// query, executes the system query and displays the results, and finally
/// executes the user query and displays the results.
/// </summary>
/// <param name="serverConfig">Contains server connection information.</param>
/// <param name="promptforDelete">When True, the user will be prompted to delete all
/// created entities.</param>
public void Run(ServerConnection.Configuration serverConfig, bool promptforDelete)
{
try
{
// Connect to the Organization service.
// The using statement assures that the service proxy will be properly disposed.
using (_serviceProxy = new OrganizationServiceProxy(serverConfig.OrganizationUri, serverConfig.HomeRealmUri,serverConfig.Credentials, serverConfig.DeviceCredentials))
{
// This statement is required to enable early-bound type support.
_serviceProxy.EnableProxyTypes();
CreateRequiredRecords();
#region Validate saved query
// Create the request
ValidateSavedQueryRequest validateRequest = new ValidateSavedQueryRequest()
{
FetchXml = _savedQuery.FetchXml,
QueryType = _savedQuery.QueryType.Value
};
// Send the request
Console.WriteLine(" Validating Saved Query");
try
{
// executing the request will throw an exception if the fetch xml is invalid
var validateResponse = (ValidateSavedQueryResponse)_serviceProxy.Execute(validateRequest);
Console.WriteLine(" Saved Query validated successfully");
}
catch (Exception)
{
Console.WriteLine(" Invalid Saved Query");
throw;
}
#endregion
#region Execute saved query
// Create the request
ExecuteByIdSavedQueryRequest executeSavedQueryRequest = new ExecuteByIdSavedQueryRequest()
{
EntityId = _savedQuery.Id
};
// Execute the request
Console.WriteLine(" Executing Saved Query");
ExecuteByIdSavedQueryResponse executeSavedQueryResponse =
(ExecuteByIdSavedQueryResponse)_serviceProxy.Execute(executeSavedQueryRequest);
// Check results
if (String.IsNullOrEmpty(executeSavedQueryResponse.String))
throw new Exception("Saved Query did not return any results");
PrintResults(executeSavedQueryResponse.String);
#endregion
#region Execute user query
// Create the request
ExecuteByIdUserQueryRequest executeUserQuery = new ExecuteByIdUserQueryRequest()
{
EntityId = _userQuery.ToEntityReference()
};
// Send the request
Console.WriteLine(" Executing User Query");
ExecuteByIdUserQueryResponse executeUserQueryResponse =
(ExecuteByIdUserQueryResponse)_serviceProxy.Execute(executeUserQuery);
if (String.IsNullOrEmpty(executeUserQueryResponse.String))
throw new Exception("User Query did not return any results");
// validate results
PrintResults(executeUserQueryResponse.String);
#endregion
DeleteRequiredRecords(promptforDelete);
}
}
// Catch any service fault exceptions that Microsoft Dynamics CRM throws.
catch (FaultException<Microsoft.Xrm.Sdk.OrganizationServiceFault>)
{
// You can handle an exception here or pass it back to the calling method.
throw;
}
}
#region Public methods
/// <summary>
/// Creates any entity records that this sample requires.
/// </summary>
public void CreateRequiredRecords()
{
#region Create Accounts to query over
Console.WriteLine(" Creating some sample accounts");
Account account = new Account()
{
Name = "Coho Vineyard"
};
account.Id = _serviceProxy.Create(account);
_accounts.Add(account);
Console.WriteLine(" Created Account {0}", account.Name);
account = new Account()
{
Name = "Coho Winery"
};
account.Id = _serviceProxy.Create(account);
_accounts.Add(account);
Console.WriteLine(" Created Account {0}", account.Name);
account = new Account()
{
Name = "Coho Vineyard & Winery"
};
account.Id = _serviceProxy.Create(account);
_accounts.Add(account);
Console.WriteLine(" Created Account {0}", account.Name);
#endregion
#region Create a Saved Query
Console.WriteLine(" Creating a Saved Query that retrieves all Account ids");
_savedQuery = new SavedQuery()
{
Name = "Fetch all Account ids",
ReturnedTypeCode = Account.EntityLogicalName,
FetchXml = @"
<fetch mapping='logical'>
<entity name='account'>
<attribute name='name' />
</entity>
</fetch>",
QueryType = 0,
};
_savedQuery.Id = _serviceProxy.Create(_savedQuery);
#endregion
#region Create a User Query
Console.WriteLine(
" Creating a User Query that retrieves all Account ids for Accounts with name 'Coho Winery'");
_userQuery = new UserQuery()
{
Name = "Fetch Coho Winery",
ReturnedTypeCode = Account.EntityLogicalName,
FetchXml = @"
<fetch mapping='logical'>
<entity name='account'>
<attribute name='name' />
<filter>
<condition attribute='name' operator='eq' value='Coho Winery' />
</filter>
</entity>
</fetch>",
QueryType = 0
};
_userQuery.Id = _serviceProxy.Create(_userQuery);
#endregion
}
/// <summary>
/// Deletes any entity records that were created for this sample.
/// <param name="prompt">Indicates whether to prompt the user
/// to delete the records created in this sample.</param>
/// </summary>
public void DeleteRequiredRecords(bool prompt)
{
bool toBeDeleted = true;
if (prompt)
{
// Ask the user if the created entities should be deleted.
Console.Write("\nDo you want these entity records deleted? (y/n) [y]: ");
String answer = Console.ReadLine();
if (answer.StartsWith("y") ||
answer.StartsWith("Y") ||
answer == String.Empty)
{
toBeDeleted = true;
}
else
{
toBeDeleted = false;
}
}
if (toBeDeleted)
{
_serviceProxy.Delete(SavedQuery.EntityLogicalName,
_savedQuery.Id);
_serviceProxy.Delete(UserQuery.EntityLogicalName,
_userQuery.Id);
foreach (Account a in _accounts)
_serviceProxy.Delete(Account.EntityLogicalName, a.Id);
Console.WriteLine("Entity records have been deleted.");
}
}
#endregion Public Methods
#region Helper methods
private void PrintResults(String response)
{
// Using XmlReader to format output
StringBuilder output = new StringBuilder();
using (XmlReader reader = XmlReader.Create(new StringReader(response)))
{
XmlWriterSettings settings = new XmlWriterSettings
{
Indent = true,
OmitXmlDeclaration = true
};
using (XmlWriter writer = XmlWriter.Create(output, settings))
{
// Parse the file and display each of the nodes.
while (reader.Read())
{
switch (reader.NodeType)
{
case XmlNodeType.Element:
writer.WriteStartElement(reader.Name);
break;
case XmlNodeType.Text:
writer.WriteString(reader.Value);
break;
case XmlNodeType.XmlDeclaration:
case XmlNodeType.ProcessingInstruction:
writer.WriteProcessingInstruction(reader.Name, reader.Value);
break;
case XmlNodeType.Comment:
writer.WriteComment(reader.Value);
break;
case XmlNodeType.EndElement:
writer.WriteFullEndElement();
break;
}
}
}
}
Console.WriteLine(" Result of query:\r\n {0}", output.ToString());
Console.WriteLine();
}
#endregion
#endregion How To Sample Code
#region Main method
/// <summary>
/// Standard Main() method used by most SDK samples.
/// </summary>
/// <param name="args"></param>
static public void Main(string[] args)
{
try
{
// Obtain the target organization's Web address and client logon
// credentials from the user.
ServerConnection serverConnect = new ServerConnection();
ServerConnection.Configuration config = serverConnect.GetServerConfiguration();
UserQueryAndSavedQuery app = new UserQueryAndSavedQuery();
app.Run(config, true);
}
catch (FaultException<Microsoft.Xrm.Sdk.OrganizationServiceFault> ex)
{
Console.WriteLine("The application terminated with an error.");
Console.WriteLine("Timestamp: {0}", ex.Detail.Timestamp);
Console.WriteLine("Code: {0}", ex.Detail.ErrorCode);
Console.WriteLine("Message: {0}", ex.Detail.Message);
Console.WriteLine("Plugin Trace: {0}", ex.Detail.TraceText);
Console.WriteLine("Inner Fault: {0}",
null == ex.Detail.InnerFault ? "No Inner Fault" : "Has Inner Fault");
}
catch (System.TimeoutException ex)
{
Console.WriteLine("The application terminated with an error.");
Console.WriteLine("Message: {0}", ex.Message);
Console.WriteLine("Stack Trace: {0}", ex.StackTrace);
Console.WriteLine("Inner Fault: {0}",
null == ex.InnerException.Message ? "No Inner Fault" : ex.InnerException.Message);
}
catch (System.Exception ex)
{
Console.WriteLine("The application terminated with an error.");
Console.WriteLine(ex.Message);
// Display the details of the inner exception.
if (ex.InnerException != null)
{
Console.WriteLine(ex.InnerException.Message);
FaultException<Microsoft.Xrm.Sdk.OrganizationServiceFault> fe = ex.InnerException
as FaultException<Microsoft.Xrm.Sdk.OrganizationServiceFault>;
if (fe != null)
{
Console.WriteLine("Timestamp: {0}", fe.Detail.Timestamp);
Console.WriteLine("Code: {0}", fe.Detail.ErrorCode);
Console.WriteLine("Message: {0}", fe.Detail.Message);
Console.WriteLine("Plugin Trace: {0}", fe.Detail.TraceText);
Console.WriteLine("Inner Fault: {0}",
null == fe.Detail.InnerFault ? "No Inner Fault" : "Has Inner Fault");
}
}
}
// Additional exceptions to catch: SecurityTokenValidationException, ExpiredSecurityTokenException,
// SecurityAccessDeniedException, MessageSecurityException, and SecurityNegotiationException.
finally
{
Console.WriteLine("Press <Enter> to exit.");
Console.ReadLine();
}
}
#endregion Main method
}
}
另请参阅
IOrganizationService
ValidateSavedQueryRequest
ExecuteByIdSavedQueryRequest
使用 FetchXML 构建查询
在代码中使用早期绑定实体类
Microsoft Dynamics 365
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